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Oscar Ultimate Using FieldGenius to Tilt Survey

The latest released version of FieldGenius data collection software already fully supports connecting Oscar Ultimate from Tersus for tilt measurement. This article will describe the operation steps of tilt measurement using FieldGenius and Oscar Ultimate. You can download the latest version of FieldGenius-v10.4.1.0 at https://helpdesk.microsurvey.com/index.php?/Knowledgebase/Article/View/307/146, and if you have other questions, you can consult Tersus after-sales technical support. 

When the latest version of FieldGenius has been installed on your handheld device, open the software and select the Make as Tersus and the Model as Oscar Ultimate when selecting the receiver to connect. Please note that when using FieldGenius to connect Oscar Advanced or Oscar Basic, select Oscar only; however when you need to perform tilt survey and tilt stakeout, you should choose Oscar Ultimate, its built-in IMU module will output tilt data to achieve high-precision measurement after tilt.


After completing the connection of the Oscar Ultimate and configuring the correction data, Oscar Ultimate has been RTK fixed as a rover. Click the [Instrument Settings] button at this time, and click [Tilt Correction] to configure the IMU.

There are three modes to choose from Tilt Mode in the [Tilt Correction] settings. When the IMU is selected, the compensation correction during the tilt measurement is performed through the IMU. You can check Tilt Rejection and set a value, which is not necessary. The Oscar Ultimate is only 2cm error within 30 degrees tilt angle, and the maximum error is only 3.5cm at the tilt angle of 60 degrees.


Click [Close] to close the settings and return to Map View. Observe the tilt light on the Oscar Ultimate panel to confirm that the tilt compensation function has been enabled. When you move to the point to be measured, the tilt light on the panel shows steady green. At this time, enjoy the convenience of tilt survey or tilt stakeout.

If you select Inclinometer in Tilt Mode, it refers to the tilt measurement using the built-in electronic tilt bubble of Oscar Ultimate, which is a more traditional tilt measurement. After selecting this mode, make sure that the electronic tilt bubble has been calibrated.


Back to Map View, select [Tilt Offset Measurement] in the GNSS Measurement Modes and then measure points in two or three tilted directions respectively. The software will automatically take the angle of tilt and the current pole length as the radius, and take the phase center of the two or three measurement points as the center of the circle to get the coordinate of the pole tip.



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